//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft shared
// source or premium shared source license agreement under which you licensed
// this source code. If you did not accept the terms of the license agreement,
// you are not authorized to use this source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the SOURCE.RTF on your install media or the root of your tools installation.
// THE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES OR INDEMNITIES.
//
#pragma once

#define EC_MOTIONDETECTED EC_USER + 1
#define THRESHOLD .40

class CMotionFilter : public CTransInPlaceFilter
{
public:
    DECLARE_IUNKNOWN;

    CMotionFilter( IUnknown * pOuter, HRESULT * phr, BOOL ModifiesData );
    static CUnknown* WINAPI CreateInstance(LPUNKNOWN punk, HRESULT *phr);

    HRESULT CheckInputType(const CMediaType *pmt);
    HRESULT SetMediaType(PIN_DIRECTION direction, const CMediaType *pmt);
    STDMETHODIMP Pause(void);
    STDMETHODIMP Stop(void);
    HRESULT Transform(IMediaSample *pMediaSample);

private:
    CMediaType m_mt;
    DWORD m_Stride;
    DWORD m_Width;
    DWORD m_Height;

    BYTE *m_pPreviousSample;
    BOOL m_bPreviousSampleSet;
};

